For factory warranty: Yes you can completely remove the system. If you are just running the Procede and don't want to uninstall, you can clear the codes, select Map 0 (valet) and it will have no indications that the Procede is installed. The dealership can even do software updates.

The shift lights do work, but very confusing when meth is spraying. When meth is spraying the hazard lights (interior only) stay on, so when it's time to shift, the hazards flash and then go steady or go back to steady if meth is flowing. Confusing enough?